1 /* 2 * Driver for the po1030 sensor 3 * 4 * Copyright (c) 2008 Erik Andrén 5 * Copyright (c) 2007 Ilyes Gouta. Based on the m5603x Linux Driver Project. 6 * Copyright (c) 2005 m5603x Linux Driver Project <m5602@x3ng.com.br> 7 * 8 * Portions of code to USB interface and ALi driver software, 9 * Copyright (c) 2006 Willem Duinker 10 * v4l2 interface modeled after the V4L2 driver 11 * for SN9C10x PC Camera Controllers 12 * 13 * This program is free software; you can redistribute it and/or 14 * modify it under the terms of the GNU General Public License as 15 * published by the Free Software Foundation, version 2. 16 * 17 */ 18 19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 20 21 #include "m5602_po1030.h" 22 23 static int po1030_s_ctrl(struct v4l2_ctrl *ctrl); 24 static void po1030_dump_registers(struct sd *sd); 25 26 static struct v4l2_pix_format po1030_modes[] = { 27 { 28 640, 29 480, 30 V4L2_PIX_FMT_SBGGR8, 31 V4L2_FIELD_NONE, 32 .sizeimage = 640 * 480, 33 .bytesperline = 640, 34 .colorspace = V4L2_COLORSPACE_SRGB, 35 .priv = 2 36 } 37 }; 38 39 static const struct v4l2_ctrl_ops po1030_ctrl_ops = { 40 .s_ctrl = po1030_s_ctrl, 41 }; 42 43 static const struct v4l2_ctrl_config po1030_greenbal_cfg = { 44 .ops = &po1030_ctrl_ops, 45 .id = M5602_V4L2_CID_GREEN_BALANCE, 46 .name = "Green Balance", 47 .type = V4L2_CTRL_TYPE_INTEGER, 48 .min = 0, 49 .max = 255, 50 .step = 1, 51 .def = PO1030_GREEN_GAIN_DEFAULT, 52 .flags = V4L2_CTRL_FLAG_SLIDER, 53 }; 54 55 int po1030_probe(struct sd *sd) 56 { 57 u8 dev_id_h = 0, i; 58 struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; 59 60 if (force_sensor) { 61 if (force_sensor == PO1030_SENSOR) { 62 pr_info("Forcing a %s sensor\n", po1030.name); 63 goto sensor_found; 64 } 65 /* If we want to force another sensor, don't try to probe this 66 * one */ 67 return -ENODEV; 68 } 69 70 PDEBUG(D_PROBE, "Probing for a po1030 sensor"); 71 72 /* Run the pre-init to actually probe the unit */ 73 for (i = 0; i < ARRAY_SIZE(preinit_po1030); i++) { 74 u8 data = preinit_po1030[i][2]; 75 if (preinit_po1030[i][0] == SENSOR) 76 m5602_write_sensor(sd, 77 preinit_po1030[i][1], &data, 1); 78 else 79 m5602_write_bridge(sd, preinit_po1030[i][1], data); 80 } 81 82 if (m5602_read_sensor(sd, PO1030_DEVID_H, &dev_id_h, 1)) 83 return -ENODEV; 84 85 if (dev_id_h == 0x30) { 86 pr_info("Detected a po1030 sensor\n"); 87 goto sensor_found; 88 } 89 return -ENODEV; 90 91 sensor_found: 92 sd->gspca_dev.cam.cam_mode = po1030_modes; 93 sd->gspca_dev.cam.nmodes = ARRAY_SIZE(po1030_modes); 94 95 return 0; 96 } 97 98 int po1030_init(struct sd *sd) 99 { 100 int i, err = 0; 101 102 /* Init the sensor */ 103 for (i = 0; i < ARRAY_SIZE(init_po1030) && !err; i++) { 104 u8 data[2] = {0x00, 0x00}; 105 106 switch (init_po1030[i][0]) { 107 case BRIDGE: 108 err = m5602_write_bridge(sd, 109 init_po1030[i][1], 110 init_po1030[i][2]); 111 break; 112 113 case SENSOR: 114 data[0] = init_po1030[i][2]; 115 err = m5602_write_sensor(sd, 116 init_po1030[i][1], data, 1); 117 break; 118 119 default: 120 pr_info("Invalid stream command, exiting init\n"); 121 return -EINVAL; 122 } 123 } 124 if (err < 0) 125 return err; 126 127 if (dump_sensor) 128 po1030_dump_registers(sd); 129 130 return 0; 131 } 132 133 int po1030_init_controls(struct sd *sd) 134 { 135 struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler; 136 137 sd->gspca_dev.vdev.ctrl_handler = hdl; 138 v4l2_ctrl_handler_init(hdl, 9); 139 140 sd->auto_white_bal = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, 141 V4L2_CID_AUTO_WHITE_BALANCE, 142 0, 1, 1, 0); 143 sd->green_bal = v4l2_ctrl_new_custom(hdl, &po1030_greenbal_cfg, NULL); 144 sd->red_bal = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, 145 V4L2_CID_RED_BALANCE, 0, 255, 1, 146 PO1030_RED_GAIN_DEFAULT); 147 sd->blue_bal = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, 148 V4L2_CID_BLUE_BALANCE, 0, 255, 1, 149 PO1030_BLUE_GAIN_DEFAULT); 150 151 sd->autoexpo = v4l2_ctrl_new_std_menu(hdl, &po1030_ctrl_ops, 152 V4L2_CID_EXPOSURE_AUTO, 1, 0, V4L2_EXPOSURE_MANUAL); 153 sd->expo = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_EXPOSURE, 154 0, 0x2ff, 1, PO1030_EXPOSURE_DEFAULT); 155 156 sd->gain = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_GAIN, 0, 157 0x4f, 1, PO1030_GLOBAL_GAIN_DEFAULT); 158 159 sd->hflip = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_HFLIP, 160 0, 1, 1, 0); 161 sd->vflip = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_VFLIP, 162 0, 1, 1, 0); 163 164 if (hdl->error) { 165 pr_err("Could not initialize controls\n"); 166 return hdl->error; 167 } 168 169 v4l2_ctrl_auto_cluster(4, &sd->auto_white_bal, 0, false); 170 v4l2_ctrl_auto_cluster(2, &sd->autoexpo, 0, false); 171 v4l2_ctrl_cluster(2, &sd->hflip); 172 173 return 0; 174 } 175 176 int po1030_start(struct sd *sd) 177 { 178 struct cam *cam = &sd->gspca_dev.cam; 179 int i, err = 0; 180 int width = cam->cam_mode[sd->gspca_dev.curr_mode].width; 181 int height = cam->cam_mode[sd->gspca_dev.curr_mode].height; 182 int ver_offs = cam->cam_mode[sd->gspca_dev.curr_mode].priv; 183 u8 data; 184 185 switch (width) { 186 case 320: 187 data = PO1030_SUBSAMPLING; 188 err = m5602_write_sensor(sd, PO1030_CONTROL3, &data, 1); 189 if (err < 0) 190 return err; 191 192 data = ((width + 3) >> 8) & 0xff; 193 err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_H, &data, 1); 194 if (err < 0) 195 return err; 196 197 data = (width + 3) & 0xff; 198 err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_L, &data, 1); 199 if (err < 0) 200 return err; 201 202 data = ((height + 1) >> 8) & 0xff; 203 err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_H, &data, 1); 204 if (err < 0) 205 return err; 206 207 data = (height + 1) & 0xff; 208 err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_L, &data, 1); 209 210 height += 6; 211 width -= 1; 212 break; 213 214 case 640: 215 data = 0; 216 err = m5602_write_sensor(sd, PO1030_CONTROL3, &data, 1); 217 if (err < 0) 218 return err; 219 220 data = ((width + 7) >> 8) & 0xff; 221 err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_H, &data, 1); 222 if (err < 0) 223 return err; 224 225 data = (width + 7) & 0xff; 226 err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_L, &data, 1); 227 if (err < 0) 228 return err; 229 230 data = ((height + 3) >> 8) & 0xff; 231 err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_H, &data, 1); 232 if (err < 0) 233 return err; 234 235 data = (height + 3) & 0xff; 236 err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_L, &data, 1); 237 238 height += 12; 239 width -= 2; 240 break; 241 } 242 err = m5602_write_bridge(sd, M5602_XB_SENSOR_TYPE, 0x0c); 243 if (err < 0) 244 return err; 245 246 err = m5602_write_bridge(sd, M5602_XB_LINE_OF_FRAME_H, 0x81); 247 if (err < 0) 248 return err; 249 250 err = m5602_write_bridge(sd, M5602_XB_PIX_OF_LINE_H, 0x82); 251 if (err < 0) 252 return err; 253 254 err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0x01); 255 if (err < 0) 256 return err; 257 258 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 259 ((ver_offs >> 8) & 0xff)); 260 if (err < 0) 261 return err; 262 263 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (ver_offs & 0xff)); 264 if (err < 0) 265 return err; 266 267 for (i = 0; i < 2 && !err; i++) 268 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0); 269 if (err < 0) 270 return err; 271 272 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height >> 8) & 0xff); 273 if (err < 0) 274 return err; 275 276 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height & 0xff)); 277 if (err < 0) 278 return err; 279 280 for (i = 0; i < 2 && !err; i++) 281 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0); 282 283 for (i = 0; i < 2 && !err; i++) 284 err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0); 285 286 for (i = 0; i < 2 && !err; i++) 287 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, 0); 288 if (err < 0) 289 return err; 290 291 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, (width >> 8) & 0xff); 292 if (err < 0) 293 return err; 294 295 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, (width & 0xff)); 296 if (err < 0) 297 return err; 298 299 err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0); 300 return err; 301 } 302 303 static int po1030_set_exposure(struct gspca_dev *gspca_dev, __s32 val) 304 { 305 struct sd *sd = (struct sd *) gspca_dev; 306 u8 i2c_data; 307 int err; 308 309 PDEBUG(D_CONF, "Set exposure to %d", val & 0xffff); 310 311 i2c_data = ((val & 0xff00) >> 8); 312 PDEBUG(D_CONF, "Set exposure to high byte to 0x%x", 313 i2c_data); 314 315 err = m5602_write_sensor(sd, PO1030_INTEGLINES_H, 316 &i2c_data, 1); 317 if (err < 0) 318 return err; 319 320 i2c_data = (val & 0xff); 321 PDEBUG(D_CONF, "Set exposure to low byte to 0x%x", 322 i2c_data); 323 err = m5602_write_sensor(sd, PO1030_INTEGLINES_M, 324 &i2c_data, 1); 325 326 return err; 327 } 328 329 static int po1030_set_gain(struct gspca_dev *gspca_dev, __s32 val) 330 { 331 struct sd *sd = (struct sd *) gspca_dev; 332 u8 i2c_data; 333 int err; 334 335 i2c_data = val & 0xff; 336 PDEBUG(D_CONF, "Set global gain to %d", i2c_data); 337 err = m5602_write_sensor(sd, PO1030_GLOBALGAIN, 338 &i2c_data, 1); 339 return err; 340 } 341 342 static int po1030_set_hvflip(struct gspca_dev *gspca_dev) 343 { 344 struct sd *sd = (struct sd *) gspca_dev; 345 u8 i2c_data; 346 int err; 347 348 PDEBUG(D_CONF, "Set hvflip %d %d", sd->hflip->val, sd->vflip->val); 349 err = m5602_read_sensor(sd, PO1030_CONTROL2, &i2c_data, 1); 350 if (err < 0) 351 return err; 352 353 i2c_data = (0x3f & i2c_data) | (sd->hflip->val << 7) | 354 (sd->vflip->val << 6); 355 356 err = m5602_write_sensor(sd, PO1030_CONTROL2, 357 &i2c_data, 1); 358 359 return err; 360 } 361 362 static int po1030_set_red_balance(struct gspca_dev *gspca_dev, __s32 val) 363 { 364 struct sd *sd = (struct sd *) gspca_dev; 365 u8 i2c_data; 366 int err; 367 368 i2c_data = val & 0xff; 369 PDEBUG(D_CONF, "Set red gain to %d", i2c_data); 370 err = m5602_write_sensor(sd, PO1030_RED_GAIN, 371 &i2c_data, 1); 372 return err; 373 } 374 375 static int po1030_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val) 376 { 377 struct sd *sd = (struct sd *) gspca_dev; 378 u8 i2c_data; 379 int err; 380 381 i2c_data = val & 0xff; 382 PDEBUG(D_CONF, "Set blue gain to %d", i2c_data); 383 err = m5602_write_sensor(sd, PO1030_BLUE_GAIN, 384 &i2c_data, 1); 385 386 return err; 387 } 388 389 static int po1030_set_green_balance(struct gspca_dev *gspca_dev, __s32 val) 390 { 391 struct sd *sd = (struct sd *) gspca_dev; 392 u8 i2c_data; 393 int err; 394 395 i2c_data = val & 0xff; 396 PDEBUG(D_CONF, "Set green gain to %d", i2c_data); 397 398 err = m5602_write_sensor(sd, PO1030_GREEN_1_GAIN, 399 &i2c_data, 1); 400 if (err < 0) 401 return err; 402 403 return m5602_write_sensor(sd, PO1030_GREEN_2_GAIN, 404 &i2c_data, 1); 405 } 406 407 static int po1030_set_auto_white_balance(struct gspca_dev *gspca_dev, 408 __s32 val) 409 { 410 struct sd *sd = (struct sd *) gspca_dev; 411 u8 i2c_data; 412 int err; 413 414 err = m5602_read_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1); 415 if (err < 0) 416 return err; 417 418 PDEBUG(D_CONF, "Set auto white balance to %d", val); 419 i2c_data = (i2c_data & 0xfe) | (val & 0x01); 420 err = m5602_write_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1); 421 return err; 422 } 423 424 static int po1030_set_auto_exposure(struct gspca_dev *gspca_dev, 425 __s32 val) 426 { 427 struct sd *sd = (struct sd *) gspca_dev; 428 u8 i2c_data; 429 int err; 430 431 err = m5602_read_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1); 432 if (err < 0) 433 return err; 434 435 PDEBUG(D_CONF, "Set auto exposure to %d", val); 436 val = (val == V4L2_EXPOSURE_AUTO); 437 i2c_data = (i2c_data & 0xfd) | ((val & 0x01) << 1); 438 return m5602_write_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1); 439 } 440 441 void po1030_disconnect(struct sd *sd) 442 { 443 sd->sensor = NULL; 444 } 445 446 static int po1030_s_ctrl(struct v4l2_ctrl *ctrl) 447 { 448 struct gspca_dev *gspca_dev = 449 container_of(ctrl->handler, struct gspca_dev, ctrl_handler); 450 struct sd *sd = (struct sd *) gspca_dev; 451 int err; 452 453 if (!gspca_dev->streaming) 454 return 0; 455 456 switch (ctrl->id) { 457 case V4L2_CID_AUTO_WHITE_BALANCE: 458 err = po1030_set_auto_white_balance(gspca_dev, ctrl->val); 459 if (err || ctrl->val) 460 return err; 461 err = po1030_set_green_balance(gspca_dev, sd->green_bal->val); 462 if (err) 463 return err; 464 err = po1030_set_red_balance(gspca_dev, sd->red_bal->val); 465 if (err) 466 return err; 467 err = po1030_set_blue_balance(gspca_dev, sd->blue_bal->val); 468 break; 469 case V4L2_CID_EXPOSURE_AUTO: 470 err = po1030_set_auto_exposure(gspca_dev, ctrl->val); 471 if (err || ctrl->val == V4L2_EXPOSURE_AUTO) 472 return err; 473 err = po1030_set_exposure(gspca_dev, sd->expo->val); 474 break; 475 case V4L2_CID_GAIN: 476 err = po1030_set_gain(gspca_dev, ctrl->val); 477 break; 478 case V4L2_CID_HFLIP: 479 err = po1030_set_hvflip(gspca_dev); 480 break; 481 default: 482 return -EINVAL; 483 } 484 485 return err; 486 } 487 488 static void po1030_dump_registers(struct sd *sd) 489 { 490 int address; 491 u8 value = 0; 492 493 pr_info("Dumping the po1030 sensor core registers\n"); 494 for (address = 0; address < 0x7f; address++) { 495 m5602_read_sensor(sd, address, &value, 1); 496 pr_info("register 0x%x contains 0x%x\n", address, value); 497 } 498 499 pr_info("po1030 register state dump complete\n"); 500 501 pr_info("Probing for which registers that are read/write\n"); 502 for (address = 0; address < 0xff; address++) { 503 u8 old_value, ctrl_value; 504 u8 test_value[2] = {0xff, 0xff}; 505 506 m5602_read_sensor(sd, address, &old_value, 1); 507 m5602_write_sensor(sd, address, test_value, 1); 508 m5602_read_sensor(sd, address, &ctrl_value, 1); 509 510 if (ctrl_value == test_value[0]) 511 pr_info("register 0x%x is writeable\n", address); 512 else 513 pr_info("register 0x%x is read only\n", address); 514 515 /* Restore original value */ 516 m5602_write_sensor(sd, address, &old_value, 1); 517 } 518 } 519